I've decided to make a few more blocks so that it will be a 4x5 block arrangement, which will make a very credible lap quilt. The strange thing is that when I finished sewing the churn dash blocks, I had a red half square triangle left over. Just one.
Now since I have made the triangles with the diagonal line method, there should be another one somewhere! Do half square triangles en masse behave like socks, and are taken by the fairies? Anyone else have this problem?